h1, h2, h3, h4, h5 {
    font-size: 100%;
}

li, span {
    list-style: none;
}

div {
    display: block;
}

textarea, input {
    outline: none;
}

*, *:after, *:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}
